Unlock server error a750f [Answered]

You have 25 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-A750F
Android version: 8.0.0
PDA version: A750FXXU1ARK4
CSC version: A750FODM1ARK4
Phone version: A750FNXXU1ARK2
Product code: SM-A750FZDDINS
CSC country code: India
CSC sales code: INS
Phone SN: RZ8KA2CX1YJ
IMEI: 351578103740767
HW version: MP0.3
RF cal date: 20181022
Chip name: EXYNOS7885
Modem board: SHANNON327
Security patch: 2018-11-01
Boot Warranty bit: 0
SIM State: ABSENT,ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... error (1)
Done with Samsung Tool PRO v.34.11